Screw



FIG. 1 is a perspective view of a screw showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the figures are included for illustratingunclaimed portions of the screw and form no part of the claimed design.

CLAIM The ornamental design for a screw, as shown and described. 